Ice breaker



FIG. 1 is a perspective view of an ice breaker showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is rear elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for an ice breaker, as shown and described. 